[import] Refactoring: Get rid of BlockedFromCreatingDocument state

Source/core/html/HTMLImportsController.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 125 matching lines @@
 
 void HTMLImportsController::wasDetachedFromDocument()
 {
     clear();
 }
 
 void HTMLImportsController::didFinishParsing()
 {
 }
 
+bool HTMLImportsController::hasLoader() const
+{
+    return true;
+}
+
 bool HTMLImportsController::isDone() const
 {
     return !m_master->parsing();
 }
 
 void HTMLImportsController::blockerGone()
 {
     scheduleUnblock();
 }
 
 void HTMLImportsController::scheduleUnblock()
 {
     if (m_unblockTimer.isActive())
         return;
     m_unblockTimer.startOneShot(0);
 }
 
 void HTMLImportsController::unblockTimerFired(Timer<HTMLImportsController>*)
 {
     do {
         m_unblockTimer.stop();
         HTMLImport::unblock(this);
     } while (m_unblockTimer.isActive());
 }
 
 } // namespace WebCore